+/* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "simgrid/msg.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(msg_app_pingpong, "Messages specific for this msg example");
+
+static int pinger(int argc, char* argv[])
+{
+ xbt_assert(argc == 2, "The pinger function one argument from the XML deployment file");
+ XBT_INFO("Ping -> %s", argv[1]);
+ xbt_assert(MSG_host_by_name(argv[1]) != NULL, "Unknown host %s. Stopping Now! ", argv[1]);
+
+ /* - Do the ping with a 1-Byte task (latency bound) ... */
+ double now = MSG_get_clock();
+ msg_task_t ping_task = MSG_task_create("small communication (latency bound)", 0.0, 1, NULL);
+ ping_task->data = xbt_new(double, 1);
+ *(double*)ping_task->data = now;
+ MSG_task_send(ping_task, argv[1]);
+
+ /* - ... then wait for the (large) pong */
+ msg_task_t pong_task = NULL;
+ int a = MSG_task_receive(&pong_task, MSG_host_get_name(MSG_host_self()));
+ xbt_assert(a == MSG_OK, "Unexpected behavior");
+
+ double sender_time = *((double*)(pong_task->data));
+ double communication_time = MSG_get_clock() - sender_time;
+ XBT_INFO("Task received : %s", pong_task->name);
+ xbt_free(pong_task->data);
+ MSG_task_destroy(pong_task);
+ XBT_INFO("Pong time (bandwidth bound): %.3f", communication_time);
+
+ return 0;
+}
+
+static int ponger(int argc, char* argv[])
+{
+ xbt_assert(argc == 2, "The ponger function one argument from the XML deployment file");
+ XBT_INFO("Pong -> %s", argv[1]);
+ xbt_assert(MSG_host_by_name(argv[1]) != NULL, "Unknown host %s. Stopping Now! ", argv[1]);
+
+ /* - Receive the (small) ping first ....*/
+ msg_task_t ping_task = NULL;
+ int a = MSG_task_receive(&ping_task, MSG_host_get_name(MSG_host_self()));
+ xbt_assert(a == MSG_OK, "Unexpected behavior");
+
+ double sender_time = *((double*)(ping_task->data));
+ double communication_time = MSG_get_clock() - sender_time;
+ XBT_INFO("Task received : %s", ping_task->name);
+ xbt_free(ping_task->data);
+ MSG_task_destroy(ping_task);
+ XBT_INFO(" Ping time (latency bound) %f", communication_time);
+
+ /* - ... Then send a 1GB pong back (bandwidth bound) */
+ double now = MSG_get_clock();
+ msg_task_t pong_task = MSG_task_create("large communication (bandwidth bound)", 0.0, 1e9, NULL);
+ pong_task->data = xbt_new(double, 1);
+ *(double*)pong_task->data = now;
+ XBT_INFO("task_bw->data = %.3f", *((double*)pong_task->data));
+ MSG_task_send(pong_task, argv[1]);
+
+ return 0;
+}
+
+int main(int argc, char* argv[])
+{
+ MSG_init(&argc, argv);
+
+ xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
+ "\tExample: %s ../../platforms/small_platform.xml app-pingpong_d.xml\n",
+ argv[0], argv[0]);
+
+ MSG_create_environment(argv[1]); /* - Load the platform description */
+
+ MSG_function_register("pinger", pinger); /* - Register the functions to be executed by the processes */
+ MSG_function_register("ponger", ponger);
+
+ MSG_launch_application(argv[2]); /* - Deploy the application */
+
+ msg_error_t res = MSG_main(); /* - Run the simulation */
+
+ XBT_INFO("Total simulation time: %.3f", MSG_get_clock());
+ return res != MSG_OK;
+}
